diff --git a/BSP/CountSensor.c b/BSP/CountSensor.c
new file mode 100644
index 0000000..e2e3074
--- /dev/null
+++ b/BSP/CountSensor.c
@@ -0,0 +1,44 @@
+#include "stm32f10x.h"
+
+uint16_t CountSensor_Count = 0;
+
+void CountSensor_Init(void) {
+    // 初始化Gpio口
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
+    GPIO_InitTypeDef GPIO_InitStructure;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
+    GPIO_Init(GPIOB, &GPIO_InitStructure);
+
+    // 初始化exit
+    GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource14);
+    EXTI_InitTypeDef EXTI_InitStructure;
+    EXTI_InitStructure.EXTI_Line = EXTI_Line14;
+    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
+    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
+    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
+    EXTI_Init(&EXTI_InitStructure);
+
+    // 初始化nvic
+    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
+    NVIC_InitTypeDef NVIC_InitStructure;
+    NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
+    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
+    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
+    NVIC_Init(&NVIC_InitStructure);
+}
+
+
+void EXTI15_10_IRQHandler(void)  {
+    if (EXTI_GetITStatus(EXTI_Line14) == SET) {
+        CountSensor_Count++;
+        EXTI_ClearITPendingBit(EXTI_Line14);
+    }
+}
+
+uint16_t CountSensor_GetCount(void) {
+    return CountSensor_Count;
+}
diff --git a/BSP/CountSensor.h b/BSP/CountSensor.h
new file mode 100644
index 0000000..0a6c267
--- /dev/null
+++ b/BSP/CountSensor.h
@@ -0,0 +1,6 @@
+#ifndef __COUNTSENSOR_H
+#define __COUNTSENSOR_H
+
+void CountSensor_Init(void);
+uint16_t CountSensor_GetCount(void);
+#endif
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 98962fa..11741c0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -39,6 +39,8 @@ add_executable(${CMAKE_PROJECT_NAME}
     BSP/OLED.c
     BSP/OLED.h
     BSP/OLED_Font.h
+    BSP/CountSensor.c
+    BSP/CountSensor.h
 )
 
 target_include_directories(${CMAKE_PROJECT_NAME} PRIVATE
diff --git a/User/main.c b/User/main.c
index 1bd843b..efe80af 100644
--- a/User/main.c
+++ b/User/main.c
@@ -1,21 +1,13 @@
 #include "stm32f10x.h"
 #include "Delay.h"
 #include "OLED.h"
+#include "CountSensor.h"
+
 int main(void) {
-
     OLED_Init();
-    OLED_ShowChar(1,1, 'A');
-    OLED_ShowString(1,3, "Hello World!12");
-    OLED_ShowNum(2, 1, 12345, 5);
-    OLED_ShowSignedNum(2, 7, 12, 2);
-    OLED_ShowSignedNum(2, 11, -34, 2);
-    OLED_ShowHexNum(3,1,0xaa55,4);
-    OLED_ShowBinNum(4,1,0xaa55,16);
-
-    Delay_ms(1000);
-    OLED_Clear();
-
+    CountSensor_Init();
+    OLED_ShowString(1,1, "Count:");
     while (1) {
-
+        OLED_ShowNum(1,7, CountSensor_GetCount(), 5);
     }
 }